determination equal to 0.87, 0.78, 0.98, 0.91, 0.79, 0.67 and 0.63 for the prediction set and using 4, 3, 3, 3, 2, 4 and 2 latent variables, respectively. Although promising results were obtained, mid-level fusion demonstrates to be the best strategy usually improving accuracy of models.

Mota, A.C.S., Santos, J.M., Pereira, M.S., Ataíde, C.H., 2020. Microwave drying of olefins from drill cuttings and analysis of the organic phase recovered during drying operation. Oil &Gas Science and Technology - Revue d'IFP Energies nouvelles 75, 1.

https://doi.org/10.2516/ogst/2019066 The main objective of the present work was to study the influence of different operating conditions in the microwave drying of drill cuttings and an eventual degradation of the condensed liquid collected during this operation. For this, a Central Composite Design (CCD) was used, considering three independent variables at three levels: initial olefin content (7.5, 10, and 12.5% w/w), power (250, 500, and 750 W), and time (5, 10, and 15 min); the residual olefin content being the response analyzed in the conducted tests without monitoring or control of the cutting's temperature. All three variables studied were statistically significant, presenting a positive or negative effect on residual olefin content. As expected, the initial olefin content had a negative effect on the response. On the other hand, when considering the applied power and the drying time, the effect on decontamination yield was positive. The results showed that cuttings can be decontaminated at lower levels than those required by environmental legislation (offshore drilling), reaching residual olefin mass contents of less than 1%. Finally, the organic phase of recovered liquids, after the condensation of vapors produced during drying, was analyzed by gas chromatography technique. It was observed greater olefin degradation in the longer and higher power tests, especially in samples of condensed liquid collected inside the microwave oven.

Mukhopadhyay, J., 2020. Archean banded iron formations of India. Earth-Science Reviews 201, 102927.

http://www.sciencedirect.com/science/article/pii/S0012825218307499 Archean banded iron formations (BIFs) are important lithologies for understanding the early Earth processes. Greenstone belts in the four Archean cratonic nucleii of peninsular India, namely, Singhbhum, Bastar, Dharwar, and Bundelkhand host BIF units that can be important candidates for case studies. The BIFs in these greenstone successions represent both Algoma- and Superior-type associations. The oldest record comes from the Paleoarchean Southern, Eastern and Western Iron Group of the Singhbhum craton and the Sargur supracrustals of the Dharwar craton. Mesoarchean and Neoarchean greenstone belts in the Dharwar and Bundelkhand cratons record a number of cycles of BIF deposition in a spectrum of depositional settings from manganiferous arenite- carbonate shelf associations to deep-water volcanics and graywacke associations. The BIFs from the Neoarchean Bailadila Group in the Bastar craton were deposited in siliciclastic shelf association. Compositional variations in major, trace and REE patterns have been evaluated from published data. High-grade iron ores are mainly mined from the BIFs and locally Mn-ores occur in association as well. Microbial carbonates associated with some of the Paleoarchean as well as Neoarchean iron-manganese formations suggest early life activities. The lithological association of the Archean iron formations have been explained in terms of both active margin and passive margin depositional settings. BIFs in association with manganiferous formations as old as Paleoarchean time provide an opportunity to probe into the redox stratification of oceanic hydrosphere and in turn the oxygenation of early atmosphere.

Müller, H., Marozava, S., Probst, A.J., Meckenstock, R.U., 2020. Groundwater cable bacteria conserve energy by sulfur disproportionation. The ISME Journal 14, 623-634.

https://doi.org/10.1038/s41396-019-0554-1 Desulfobulbaceae Cable bacteria of the family couple spatially separated sulfur oxidation and oxygen or nitrate reduction by long-distance electron transfer, which can constitute the dominant sulfur oxidation process in shallow sediments. However, it remains unknown how cells in the anoxic part of the centimeter-long filaments conserve energy. We found 16S rRNA gene sequences similar to groundwater cable bacteria in a 1-